A post shared by Tori Roloff (@toriroloff) on May 14, 2017 at 4:24pm PDT

Jackson Kyle Roloff was born on Friday, May 12, at 8 a.m., his proud mom revealed in an Instagram post on Sunday, May 14. The baby weighed 9 pounds 1 ounce and is 20.5 inches long. “Mom and Dad are so in love with you already,” she captioned the photo. Find out more in the video above, and detailed below!

A post shared by Zach Roloff (@zroloff07) on May 14, 2017 at 4:24pm PDT

The Little People, Big World stars announced in November that they were going to become a family of three. This is the first grandchild for Zach’s parents, Matt and Amy Roloff.

That same month, the proud dad-to-be revealed how Tori told him about the pregnancy. “I walked into the house and she had written it on a notepad that she was practicing her calligraphy, so I was reading through this,” he recalled in a TLC video. “On the last page, she wrote, ‘You’re going to be a dad!’ and I skipped right over it. Then she said, ‘Wait, hey, you missed it!’ Then she pulled it back and I read it.”